Critical 9.8Published May 27, 2026

CVE-2026-45988rxrpc: Fix re-decryption of RESPONSE packets

Updated under an hour ago (Oct 27, 2026, 2:50 PM ET)

Does this affect you?

It affects Linux and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Linux

Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix re-decryption of RESPONSE packets If a RESPONSE packet gets a temporary failure during processing, it may end up in a partially decrypted state - and then get requeued for a retry. Fix this by just discarding the packet; we will send another CHALLENGE packet and thereby elicit a further response. Similarly, discard an incoming CHALLENGE packet if we get an error whilst generating a RESPONSE; the server will send another CHALLENGE.

CVSS: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-682
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 17926a79320afa9b95df6b977b40cca6d8713cea before d61482be4aae1835b78875761206241835a7510e; 17926a79320afa9b95df6b977b40cca6d8713cea builds before 7b89868305052b94a91b708c462bc2281fa42a4a; 17926a79320afa9b95df6b977b40cca6d8713cea builds before 76cb9a2d252274adfae6e293a292434631a7d472; from 17926a79320afa9b95df6b977b40cca6d8713cea before f55b383070170e988e4dec28be2af1714d258521; 17926a79320afa9b95df6b977b40cca6d8713cea builds before 0422e7a4883f25101903f3e8105c0808aa5f4ce9	CNA record
linux linux_kernel linux:linux_kernel	from 2.6.22 before 6.6.140; from 6.7 before 6.12.86; from 6.13 before 6.18.27; from 6.19 before 7.0.4	NVD

References

References

https://git.kernel.org/stable/c/d61482be4aae1835b78875761206241835a7510e	patch
https://git.kernel.org/stable/c/7b89868305052b94a91b708c462bc2281fa42a4a	patch
https://git.kernel.org/stable/c/76cb9a2d252274adfae6e293a292434631a7d472	patch
https://git.kernel.org/stable/c/f55b383070170e988e4dec28be2af1714d258521	patch
https://git.kernel.org/stable/c/0422e7a4883f25101903f3e8105c0808aa5f4ce9	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.